CZ20031100A3 - High voltage hybrid station with opposite busbars and shielded cutoff and switching modules for the same - Google Patents

Abstract

The invention provides a "hybrid" high voltage multiphase distribution substation having one or more sets of busbars including at least one air-insulated set of busbars (10), the substation having feeders (A, B, C, D) for air-insulated lines (21, 22) placed in substantially parallel bays (11, 12) on either side of the set(s) of busbars (10) and including metal-clad breaking and switching modules each formed by metal cladding (2) containing, for each electrical phase passing through a module, breaking and disconnection systems connected to a phase conductor (6) in an insulating gas, an end disconnection system (4A, 4B) being placed at each of the two ends (13, 14) of a module, the substation being characterized in that the feeders are opposite in facing pairs, and in that two opposite feeders (A, B) are electrically interconnected for each electrical phase via a single module (1) when the break systems (3A, 3B, 3C) and the end disconnector systems (4A, 4B) of said module are closed, said end disconnector systems each being connected to a respective feeder (A, B).

Description

It is an object of the present invention to provide a high voltage substation that is hybrid, i. which includes bus bars and connection lines using air insulation technology, as well as encapsulated break and switch modules, which include break and disconnect devices in a metal housing and serve to interconnect buses and connection lines.

BACKGROUND OF THE INVENTION

At the beginning it would be useful to describe the concept of a high voltage hybrid station as it is relatively new. The abbreviation AIS (Air Insulated System) is referred to as air insulation technology and the abbreviation GIS (Gas Insulated System) technology in a metal shell. The main objective sought is to reduce the ground space occupied by prior art stations (i.e., stations that are entirely AIS), while maintaining both the cost benefits of AIS

1fifl5960a

- 2 Φ Φ · · and easy replacement of components, as well as the benefits of GIS technology in terms of dimensions and pollution behavior. Hybrid stations can be set up as newly built devices, but also as an extension of the prior art station, which has only limited space for expansion.

Figures 1, 1a and 2 show a prior art station with two sets of buses and opposite connecting lines. This type of station occupies a relatively large space, both in the direction of the fields of the connecting lines (ie in length) and in the direction of the buses (ie in width), since the connecting lines must lie opposite each other in fields that are offset relative to each other. Switching devices belonging to one connection line must be located under both bus sets.

In particular, to limit the length of the prior art stations, high voltage hybrid stations have been developed, for example as shown schematically in FIGS. 3 and 6. These stations utilize encapsulated interrupt and switch modules that serve to interconnect buses and connection lines. Such encapsulated modules are known, in particular, from PCT application WO 00/24100, in which Figures 1 and 2 show single-phase modules for one and two sets of buses. In this technology, each connection line is connected to its own module, each module used to connect one or two sets of buses to one connection line. Thus, the two opposite connection lines utilize two modules, and if a station contains more than one set of buses, they are necessarily located in two offset fields. Compared to the prior art station, this type of hybrid station allows limitations

1fi RRQRAa

3 * ··· · · W · 1 φ

The length of the connection lines and thus the length of the station, but does not allow a substantial increase in the number of fields they can be located in the space. Also, this technology does not allow direct connection of two opposite connecting lines if the module has to be disconnected from the bus set due to its failure.

SUMMARY OF THE INVENTION

The Applicant has proposed a new type of encapsulated module for designing hybrid stations with opposite connection lines opposite one another, which, compared to existing stations, allows a reduction in production costs and a substantial increase in the number of fields that can be accommodated in a given space. The hybrid station according to the invention further allows, if necessary, to make an electrical connection between two opposite connecting lines.

To this end, the invention proposes a high voltage multiphase substation called "hybrid with one or two bus sets, including at least one air insulated bus set, comprising connection lines for air insulated lines arranged in substantially parallel fields on both sides of the set or bus sets, and which comprising encapsulated interrupter and switch modules, each comprising a metal sheath, comprising interruption and disconnection systems connected to a phase conductor in the insulating gas for each electrical phase passing through the module, and an end disconnection system is provided at both ends of the module, characterized in that the connecting lines they are opposed to each other two opposite each other, and in that the two opposite connection lines are for each electrical phase

85960a * ft · • ···· • ft electrically coupled via a single module when the interruption systems and terminal disconnect systems of said module are closed, said terminal disconnect systems being connected to the respective connection line each time.

In one embodiment of the invention, the two opposite connection lines are electrically connected via a single multiphase module. For example, in a three-phase station, two opposing connection lines are connected by one three-phase module through which the three phase conductors contained in the metal housing of said module pass and each end of the module is connected to an above-ground bushing.

In another embodiment of the invention, the two opposite connection lines of the station through which n electrical phases pass are connected by n single-phase modules. For example, in a three-phase station, two opposing connection lines are interconnected by three single-phase modules, each passing through a single phase conductor connected at each end to the overhead bushing.

In a preferred embodiment of the invention, the first and second connection lines of the station form a field which lies in a straight line and is perpendicular to the bus set. In a station with at least two bus sets, these bus sets are substantially parallel and perpendicular to the field.

In a further embodiment according to the invention, the terminal opening system in the module sheathing for each electrical phase is each formed by an end disconnector which opens at an overhead bushing electrically connected to the station connection line, said end disconnectors being arranged

85960a '5 in series with two interruption systems consisting of two interrupters, arranged on both sides of one or two input disconnectors, with at least one opening at the overhead bushings electrically connected to the respective bus of the set bus. The single input disconnect embodiment is particularly intended to install the module in a single bus set station in which the input disconnector is generally called a bus set disconnector.

In another embodiment of the invention, the station comprises two sets of buses and the interrupt and switch module comprises two input disconnectors which are directly connected to each other by a phase conductor. Two input disconnectors are generally called switching disconnectors.

In another embodiment of the invention, the station comprises two sets of buses and the interrupt and switch module comprises two input disconnectors which are connected together by means of a decoupling disconnector in series with the phase conductor.

The invention also relates to an interrupt and switch module comprising a metal sheath containing insulating gas and for each electrical phase: a first interrupter connected to a phase conductor extending through said module, each of the two ends of said module comprising, for each phase, an end disconnector connected to the overhead bushing and an input disconnector arranged between the interrupter and the end disconnector, characterized in that the sheath comprises a second interrupter arranged in series with the first interrupter such that the input interrupter is located between the first and second interrupters. This type of module according to the invention is particularly intended for hybrid stations with a single bus set or for

85960a “H.” Hybrid Stations The input disconnector of a module according to the invention is generally called a bus set disconnector. In most applications, it opens onto the overhead feedthrough, but it is also possible to have it open to a cable box housed in a housing or an encapsulated conduit without departing from the spirit of the invention.

In another embodiment of the invention, the module sheath comprises, for each electrical phase, a second input disconnector disposed between the first and second interrupters. In particular, this embodiment is intended to install the module in a station with two sets of buses in which two input disconnectors are generally called switching disconnectors. In the first embodiment of the module, the two input disconnectors are directly connected to each other by a phase conductor. In the second embodiment, the two input disconnectors are interconnected by a decoupler in series with a phase conductor to isolate the two symmetrical halves of the module. The two bus sets of the station of the invention may be fully air insulated (AIS), or may be combined AIS / GIS, wherein the first set of buses is air insulated and the second is in a metal sheath.

In another embodiment of a hybrid station module according to the invention, in particular a module intended for a "one-and-a-half" station, two connection lines and two sets of buses are interconnected by a module comprising three interrupters in series, one interrupter being arranged between two input disconnectors used as output disconnectors towards the connection lines for the lines. Other "one-and-a-half" type stations can be designed to connect a two-circuit module according to the invention to a single-circuit module according to the prior art.

85960a

4 • 4 · 4 4 4 4 * 4 4444 4 · 4 4

4 4 4 4 * 44

Optionally, the at least one interruption or disconnect system of the module of the invention may be arranged in a separate compartment in the module housing, which compartment is sealed from adjacent compartments.

Optionally, the module according to the invention may comprise at least one current transformer disposed between the terminal breaker and the overhead bushing and / or between the input breaker and the breaker.

BRIEF DESCRIPTION OF THE DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a prior art station with two sets of buses and opposed connecting lines; FIG. 1a shows a schematic of the principle of shifting station connecting lines of the prior art. 1, 2 is a perspective view of a prior art station such as that shown in FIG. 1, FIG. 3 is a perspective view of a prior art hybrid station with two sets

85960a * · ** buses in which opposed connecting lines are in fields that are offset relative to each other,

9 9 9 9

Fig. 3a is a schematic diagram of a station electric circuit as shown in Fig. 3; Fig. 4 is a perspective view of a hybrid station according to the invention with two bus sets and a three-phase module version; as shown in Fig. 4,

Fig. 5 partial view on other module design for hybrid station se two Bus sets what is shown on giant. 4,

Fig. 5a is a schematic diagram of an electrical circuit for a station using the module as shown in Fig. 5, Fig. 5b a perspective view of a hybrid station according to the invention with two sets of busses equivalent to that shown in Fig. 4 but with three individual single-phase Fig. 6 is a perspective view of a prior art hybrid station in which single-set techniques are opposed connecting lines in fields that are offset relative to each other; Fig. 6a is a schematic diagram of the electrical circuit for the station as shown in Figs. 6,

85960a * 44 · 4 4 4 4 * 4 • 4 4444 * 444 444 · * 4 · 4 4 φ · * · 4

Fig. 6b is a perspective view of a prior art hybrid station with a single set of buses that is equivalent to that shown in Fig. 6 but with three individual single-phase modules; Fig. 7 is a perspective view of a hybrid station according to the invention; Fig. 7a is a schematic diagram of an electrical circuit for a station as shown in Fig. 7; Fig. 8 is a perspective view of a hybrid station according to the invention for the so-called H-shaped arrangement; Figure 9 is a perspective view of a hybrid station according to the prior art in a "one-and-a-half" arrangement; Figure 10 a perspective view of a hybrid station according to the invention in a "one-and-a-half" arrangement; schematic diagram of the electrical circuit for a "one-and-a-half" hybrid station according to the invention at,

85960a • 4 • 4t 4 * 4 4 • 4444 · 4 4 4 4

4 4 4

Fig. 11 is a perspective view of another embodiment of a "one-and-a-half" hybrid station module as shown in Fig. 10; Fig. 12 is a perspective view of a hybrid station according to the invention in a " Fig. 13 is a perspective view of a hybrid station according to the invention having two sets of buses: AIS and GIS; Fig. 14 one electrical phase of another embodiment of a module according to the invention for a station; with two bus sets in which the switch disconnectors are arranged in parallel.

DETAILED DESCRIPTION OF THE INVENTION

Figure 1 shows a prior art air isolation technology (AIS) station equipped with two bus sets 10 and two switch disconnectors 18 for each electrical phase in field 11 or 12, wherein each switch disconnector can connect one phase The connection line comprises, as a rule, in series, an AIS device such as an interrupter 15, a current transformer 16 and a line earth disconnect 17. The circuit breakers 18 of the same connection line must be arranged below the two bus sets 10, as also shown in FIG. 2. They occupy a space on the ground which corresponds approximately to the length of the two bus sets. Of which

85960a

9

9 9 9

9 999 «

9 9 9

9 9

9 9 9 9

9 99 * 99 99 shows that the two opposite connection lines A or B cannot be opposite each other and therefore the fields 11 and 12 they occupy must be offset in relation to each other in the width, i.e. in the direction of the bus sets. Connection line A or B leads to power lines 21 or 22 in an extension of its field 11 or 12, and these power lines are generally supported by columns 23 and 24 that extend to a higher height than the connection lines.

Giant. 1a shows a diagram of the displacement of the fields 11 and 12 for the connecting lines A, B, C, D towards the width.

Giant. 2 is a perspective view of a prior art station and allows a better understanding of how the fields 11 and 12 are offset in width.

Giant. 3 is a schematic perspective view of a prior art hybrid station with two sets of buses in which each of the connecting lines A and B is connected to its own module 7A. These modules 7A are known in particular from the PCT application WO 00/24100 and the drawing shows a three-phase version thereof, in which three phase conductors 6 are contained in one metal casing 8. The module shows only one conductor 6 for simplicity. comprises, for each phase, one interruption system or interrupter 3 and three interruption systems or interrupted 4 which open at the overhead bushing 5. The first interconnect, called line breaker, is connected to power line 21 or 22 of connection line A or B. , called normally open, are connected to the buses 9 of the two sets of 10 buses.

Each module serves to connect one or the other set of 10 buses to the connection line. Two opposite connecting lines,

35960a

* * * * * To <<<<<<<<<<to

Thus, for example, A and B or C and D utilize two modules necessarily positioned in two fields 11 and 12, which are offset in relation to each other in width. In particular, this arrangement with two modules for two opposite connecting lines allows the supply line to continue to be powered even when the module belonging to the opposite connecting line is out of order. However, it does not allow direct connection of two opposite connecting lines if the module has to be disconnected from the bus set due to its failure.

Giant. Fig. 3a is a schematic diagram of the electrical circuit for the hybrid station shown in Fig. 3. The connection lines B and D are here for supplying power transformers to the line 22. While the circuit breakers are closed and not shown, the circuit breakers are shown between two bus sets 10. It can be seen that the two opposite connection lines, for example A and B or C and D, cannot be directly connected to each other. However, when the circuit breakers are closed, it is possible to feed one or the other set of 10 busses via a live connection line A or C, the connection lines B or D being supplied from the other side of the set of busses. Obviously, this indirect connection of the opposed connecting lines cannot be made if the bus sets are not available.

Giant. 4 is a perspective view of a hybrid station according to the invention with two sets of buses and one three-phase T module that connects two opposing connection lines, for example A and B or C and D. Two opposing connection lines form arrays 11 and 12 which lie in a single line and are substantially perpendicular to two sets of 10 buses. The arrays of consecutive opposed connecting lines are substantially parallel and lie opposite each other, and thus occupy a space which is smaller by approximately half that of the space

85960a requires the same number of connection lines in the hybrid station. • • • • • • • • • • • • • As in the prior art AIS station or in the prior art hybrid station, here also the connection line A or B is connected to the power line 21 or 22 in an extension of its field 11 or 12 and the guides 21 and 22 are generally supported by columns 23 and 24 that extend to a greater height than the connecting guides. Since the connection lines A and B lie opposite each other, the hybrid station according to the invention has lines 21 and 22 which lie in a single line.

The illustrated module 1 comprises three phase conductors 6 housed in a metal sheath 2. For simplicity, only one conductor 6 is shown, as in Fig. 3. The hybrid station module of the present invention, like the conventional hybrid station modules, is primarily made generally a tubular metal sheath, which at each of its ends 13 and 14 each comprises an end disconnector 4A or 4B leading to the respective overground bushing 5A or 5B as well as to the electrical phases passing through the module.

It is a feature of the invention that all overhead bushings 5A or 5B of each of the module ends are connected to lines 21 or 22 of opposite connecting lines, for example A and B, for example by means of cables.

In the two bus set station shown in FIG. 4, the module 1 comprises two interrupters 3A and 3B connected in series by a phase conductor 6 for each phase, and two input disconnectors 4M, also called switching disconnectors. Indeed, the two 4M circuit breakers make it possible to transfer the loads of one and / or the other set of buses to one and / or the other of the opposite connecting lines and vice versa. Each switching circuit breaker is connected to the phase conductor tap 6 located between the two breakers 3A and 3B and the overhead bushing 5M is connected to the set 10 buses.

A two bus set station diagram is more convenient in terms of availability than a one bus set diagram. In the event that one bus set cannot be used, the 4M circuit breaker connected to that bus set is open while its neighbor connected to the available bus set is closed. Thus, one and / or the other of the opposite connecting lines may be supplied with an available set of buses.

In a preferred embodiment of the invention, each switch disconnector is located in a compartment that is sealed in isolation from other compartments in the module housing, and two adjacent switch disconnectors 4M are separated from each other by a sealing baffle formed, as usual, with a cone of electrically insulating material. This embodiment is advantageous because, in the event of a failure in the separation of the switch disconnector connected to one set of buses, the other set of buses keeps available. Indeed, the placement of the switch disconnectors in separate compartments allows the failure of the disconnector in the first compartment not to extend to the second disconnector located in the adjacent second compartment, which is isolated from the first. Thus, the open switch disconnector located in the undamaged compartment remains energized, and the bus set connected to this second compartment can be kept alive without having to disconnect the cables connecting it to the module. Only the bus set connected to the first damaged compartment will be out of operation.

Furthermore, if both bus sets are inoperative,

85960a «>

• · · · · φ φ φ

The damaged connection mode of a hybrid station according to the invention operating in a damaged mode may be fed by the line of the opposite connection line. In fact, the module according to the invention makes it possible to make an electrical connection between two opposite connection lines by closing the two breakers 3A and 3B and the two end disconnectors 4A and 4B of said module.

Giant. 4a is a schematic diagram of the electrical circuit for the station shown in FIG. 4. As in FIG. 3a, it is assumed that the line breakers are closed, and only the breakers are shown. It can be clearly seen that when both the circuit breakers and disconnectors of the module are closed, the two opposing lines can be directly connected phase to phase by the phase conductors of the module. Compared to FIG. 3a, it is apparent that the opposed connecting lines occupy approximately half the space.

Figure 5 schematically depicts another embodiment of module 1 of Figure 4, wherein the isolator disconnector 4S in series with the phase conductor 6 connects, for each electrical phase, two switch disconnectors 4M. Opening the isolator disconnector 4S allows the connection of all connection lines to the bus set from the same side, independently of the opposite connecting line. Moreover, provided that a temporary or permanent grounding device not shown in the drawing is provided, maintenance may be carried out at half of the module, for example at breaker 3B or breaker 4B, with the other half of the module (breaker 3A and breaker 4A) remaining in the module. traffic. The switch disconnectors may advantageously be located in separate compartments so that, in the event of a failure in one compartment, the dielectric gas can be evacuated from that compartment while keeping the separator open in its isolated compartment without thereby

85960a The operation of equipment located in the undamaged half of the module has been affected by the operation of equipment located in the undamaged half of the module.

Thus, the design with a decoupling disconnector is advantageous because it provides better operational flexibility. It should be noted, however, that the operating flexibility is not complete, unlike the classical station shown in Fig. 3, since all the connecting lines cannot be switched independently of the bus set on the opposite side.

Giant. 5a is a schematic diagram of the electrical circuit for the station shown in FIG. 4, but having a decoupler for each phase incorporated in module 1. As shown in FIG. 5. When the decoupler is open, the station functions as two independent symmetrical stations.

Giant. 5b is a perspective view of a hybrid station according to the invention with two sets of buses and three individual single-phase modules 1 connecting two opposite connection lines A and B or C and D. This station is functionally equivalent to the station shown in FIG. In terms of insulation failure and maintenance. However, due to the volume of each individual module, its width may be slightly larger than that of a three-phase module.

Giant. 6 is a perspective view of a prior art hybrid station with one set of buses in which the connecting lines A and B lie opposite each other in the fields 11 and 12, which are slightly offset relative to each other. This station uses one three-phase module per connection line, which contains an interrupter 3 connected at each end of the module to the disconnector 4. Modules of opposite connection lines are

85960a Arranged here in fields that are offset relative to each other but can be as in FIG. 6b.

Giant. 6a is a schematic diagram of an electrical circuit for a single bus set station shown in FIG. 6, in which opposite connection lines A and B are offset relative to each other. However, in conventional hybrid stations with one set of buses it is possible to arrange the modules of the opposite connection lines opposite one another.

Giant. 6b is a perspective view of a conventional hybrid station with one set of buses that is equivalent to that shown in FIG. 6 but with three individual single phase modules. The modules of the opposite connecting lines are arranged opposite one another here, the disconnectors of the bus set of the two opposite modules being allocated to the same phase and connected via cables to the bus 9 through which this phase passes. The cables are connected to the bus at the same connection point 25. This type of station does not allow direct connection of the two connection lines if the bus set is not available. Although it is possible to disconnect the cables connected at point 25 of the connection and to make a direct connection between the opposite disconnectors of the bus set, this is a delicate intervention.

Giant. 7 is a perspective view of a hybrid station according to the invention with one set of buses in which the opposite connection lines A and B are connected via a single module 1, here in a three-phase embodiment, and form arrays 11 and 12 which lie in a single line. The module 1 comprises, as in a station with two bus sets, two breakers 3A and 3B for each phase in series arranged between two

85980a disconnecting 4A and 4B connected to one connection line A or B each. one bus set, the module 1 contains only one input disconnector 4M per phase, also called a bus set disconnector, which connects the bus set 10 to the phase conductor 6 at a location between two interrupters. When the 4M bus set disconnector is open, it is possible to directly connect the two opposite connection lines if the bus set is unavailable. A schematic diagram of the electrical circuit for this station is shown in Fig. 7a,

Giant. 8 is a perspective view of a hybrid station according to the invention for the so-called &quot; H. A classic circuit diagram for this station is shown in Figure 8a. The modules 1 used in this H-shaped station, as well as the arrangement of the opposite connecting lines A and B or C and D, are similar to the hybrid station according to the invention with a single set of buses. The 4M input disconnectors or bus set disconnectors of the two modules side by side are connected via the cables of the bus set 20, which can be manually disconnected from the overhead bushings 5M carrying them. When all cables of the bus set 20 are connected as shown in dotted lines in the drawing, the electrical connection is equivalent to the electrical connection of one bus set. In particular, the H-shaped arrangement leads again to the consideration of two pairs of opposite connecting lines in the station. Each pair is here connected via module 7 to the cables of the bus set 20 connected between the input disconnectors 4M of the two modules. Thus, the whole considered is an H-shaped arrangement, as can be seen in Figure 8a.

The H-shaped line L1 or L2 of the station is still connected in a known manner to the power transformer T1 or

4C GKOKt- * 6

T2. The 4M input disconnectors are open during normal operation. If, for example, a fault occurs on the L1 line, the breaker 3A and the end disconnector 4A of the module connected to the L1 are open to isolate upstream and downstream portions of the line. The breaker 3B and the breaker 4B are closed, and the breakers 4M are also closed, so that the transformer T1 will be powered by the L2 line at the same time as the transformer T2. Other operating modes are known for the H-shaped stations and are not described in detail here. Obviously, the invention does not relate to the H-like configuration itself, but to the H-shaped hybrid station that uses a particular module 1.

Fig. 9 is a perspective view of a prior art hybrid station in a "one-and-a-half" arrangement. The two connection lines for the lines L1 and L2 and the two bus sets 10 are connected by means of three known encapsulated modules 7B arranged in one line and electrically connected in series. Each module 7B consists of a breaker 2 located in a metal sheath comprising at each end and for each electrical phase one disconnector 4 connected to the overhead bushing. The two adjacent modules are connected in series through the cables connecting their overhead bushings and are also connected to the connection line for L1 or L2 lines. The operation of the “one break and a half” station is as follows:

Under normal conditions, all breakers are closed.

In the event of a fault on one bus set, the bus set can be isolated without interrupting the power supply.

1A AAQfifla

4 4444 4 4 «4 444 444 ·« 44 4 4 4 44 connection cables for a line that is provided by an undamaged bus set, with current flowing through two of the three disconnectors.

Fig. 10 is a perspective view of a hybrid station according to the invention with a "one interrupter and pulse" architecture that uses a single interrupt and switch module I connecting one set of 10 buses to two connection lines for lines L1 and L2. Module 1 contains three breakers 3A, 3B and 3C connected in series via phase conductor 6 for each electrical phase. A total of two 4M input disconnectors are located between two adjacent breakers, which in this arrangement are used as one breaker and a half as output breakers leading towards the connecting lines for lines L1 and L2.

FIG. 10a is a diagram of the electrical circuit for a one-and-a-half hybrid station shown in FIG. 10.

Fig. 11 shows the module 1 of Fig. 10 connected for each electrical phase to the disconnecting 4S in series with the phase conductor 6 so that by opening one or two disconnectors 4S it is possible to isolate each of the interrupters 3A, 3B or 3C from its neighbors.

A hybrid station according to the invention with a "one-and-a-half" architecture can also be implemented using the two-interrupter module 1 of the invention, which is coupled to the prior art module 7B with a single interrupter. Module 1 is a module of the type used in a hybrid station according to the invention with one set of buses, where the 4M input disconnectors are connected to a connection line here

85960a

• · ftft í <

ft «ft • ft ftft for any kind of cable (air-insulated, metal-coated, with sheathed cables, etc.).

Fig. 12 is a perspective view of such a hybrid station with a module 1 whose input disconnector 4M forms a disconnection system connected to an underground connection line for the L2 line. This disconnection system 4M is formed, for each phase, by two adjacent disconnectors arranged in series with the phase conductor 6, with which they form a "T-branch", which is directed towards the protruding part 27 of the sheath 2. The protruding part 27 is intended to allow connecting each phase conductor 6 to a cable 28 which is insulated by the sheath, wherein the cable box may be located outside the sheath in the extension of said portion. The end disconnector 4A of module 1 is connected to the first bus set 10 and the second end disconnector 4B is connected to the connection line L1 as well as to the first disconnect conventional module 7B whose second disconnector is connected to the second bus set 10.

The modules used in the hybrid station according to the invention may include different types of connections to the disconnectors depending on the type of bus set and connection lines in the station. The hybrid station shown in FIG. 4 comprises two sets of 10 bus insulated buses, and the inlet disconnectors 4M therefore terminate at 5M overhead bushings. The hybrid station of the invention with two sets of busses can also be implemented in an AIS / GIS combination, wherein the first set of busses is air insulated and the second in a metal housing. In this case, one of the 4M input disconnectors opens to the metal-jacketed encapsulated bus set.

Fig. 13 shows one electrical phase of such a combined station with two sets of AIS / GIS buses

• 4

4b ·· and 4 · 4 · 44 · 4 4 4 t 4

44 44 in a single-phase version, the single-phase module 1 for each phase interconnecting two opposing connection lines, for example A and B or C and D. The module housing 2 is connected to the encapsulated housing 30 which contains one bus 29 from the encapsulated bus set. The content of the sheath 30 may be in contact with the sheath 2 or may be insulated therefrom by a sealing partition at the end of the inlet disconnector 4M.

The modules used in the hybrid station according to the invention with two sets of buses are shown in the preceding drawings with two 4M switching disconnectors, each consisting of one disconnecting element. The invention also encompasses an embodiment of the module wherein each 4M circuit breaker is a disconnect system consisting of two disconnectors arranged in series with a phase conductor within the module housing to form an "T" branch at the input of the input disconnector. This embodiment is primarily suited for an air insulated two bus set, but can also be used with two bus sets that are combined AIS and GIS, where the T-shaped branch is arranged to exit on the encapsulated bus set.

Fig. 14 shows one electrical phase of such an embodiment of a station with two sets of air-insulated busbars in a single-phase version, wherein each 4M switch disconnector consists of two 4MA and 4MB disconnecting elements forming a "T" branch. These two taps are connected in parallel in module 1 and terminate at an overhead bushing 5M, which connects the module to the phase of one of the two sets of buses. This parallel switch disconnect solution provides complete operational flexibility, similar to the prior art hybrid station shown in FIG.

9, 3, since each connection line can be independently connected to one or the other set of buses. By comparison, the stations according to the invention shown in Figures 4 or 5 do not allow this complete flexibility.

Claims (21)

A high voltage multiphase substation called "hybrid with one or two bus sets, including at least one air insulated bus set (10), comprising connection lines (A, B, C, D) for air insulated lines (21, 22) arranged in substantially parallel arrays (11, 12) on both sides of the bus set (s) (10) and comprising encapsulated interrupt and switch modules (1), each comprising a metal sheath (2) comprising interruption and interruption for each electrical phase passing through the module. disconnection systems connected to the phase conductor (6) in the insulating gas, wherein an end disconnection system (4A, 4B) is provided at both ends (13, 14) of the module, characterized in that the connecting lines are opposed each two opposite each other; in that the two opposite connection lines (A, B) are electrically connected for each electrical phase by means of a single module (1) when the interruption systems (3A, 3B, 30 and the end disconnection systems (4A, 4B) of said module are closed, said end disconnection systems being connected to the respective connection line (A, B) each. Multi-phase substation according to claim 1, characterized in that two opposing connection lines (A, B) electrically connect a single multi-phase module (1). The multi-phase substation according to claim 1, wherein it passes through n electrical phases, characterized in that the two opposite connection lines (A, B) are connected by means of n single-phase modules (1). • · · ♦ Station according to one of Claims 1 to 3, characterized in that the first (A, C) and second (B, D) connection lines form fields (11, 12) which lie in a straight line and are perpendicular to the set (11). 10) buses. Station according to one of Claims 1 to 4, characterized in that the end disconnecting system in the sheath (2) of the module (1) is formed for each electrical phase by an end disconnector (4A, 4B) which opens at the overhead bushings (5A). 5B) electrically connected to the connection line (A, B) of the station, and in that said end disconnectors (4A, 4B) are arranged in series with two interruption systems consisting of two interrupters (3A, 3B) arranged on both sides one or two input disconnectors (4M), each of which terminate at an overhead bushing (5M) electrically connected to the bus (9) of the bus set (10). Station according to claim 5, characterized in that it comprises two bus sets (10) and that the interrupt and switch module (1) comprises two input disconnectors (4M) which are directly connected to each other by a phase conductor (6). Station according to claim 5, characterized in that it comprises two bus sets (10) and that the interrupt and switch module (1) comprises two input disconnectors (4M) which are connected together by means of a decoupling disconnector (4S) in series with the phase wire (6). 8. Interruption and switching module consisting of a metal sheath (2) containing insulating gas and for each electrical phase: a first interrupter (3A) connected to the phase 1fi RTOfiDa ** k * ** ** TO ** ** ** ** ** k ** ** k k k k k k k k a conductor (6) passing through said module, each of the two ends (13, 14) of said module comprising for each phase an end disconnector (4A, 4B) connected to the overhead bushing (5A, 5B), and an input disconnector (4M) arranged between a breaker (3A) and an end breaker, characterized in that the sheath (2) comprises a second breaker (3B) arranged in series with the first breaker (3A) such that the input breaker (4M) is located between the first and second breakers (3A), 3B). Module according to claim 8, characterized in that the input disconnector (4M) is connected to the overhead bushing (5M). The module according to claim 8, characterized in that the input disconnector (4M) is a disconnection system formed for each phase by two adjacent disconnectors arranged in series with the phase conductor (6) with which they form a T-shaped branch towards the protruding and wherein said protruding portion is intended to allow each phase conductor (6) to be connected to a cable (28) outside the sheath that is insulated by the sheath. Module according to claim 9, characterized in that the sheath (2) comprises, for each electrical phase, a second input disconnector (4M) arranged between the first and second interrupters (3A, 3B). Module according to claim 11, characterized in that the two input disconnectors are directly connected to each other by a phase conductor. Module according to claim 11, characterized in that 9 * 9 * 9 * 9 * 9 * 9 * 9 * 9 * That the two input disconnectors (4M) connect the isolator disconnector (4S) in series with the phase conductor (6). Module according to claim 11, characterized in that each input disconnector (4M) consists of a disconnection system consisting of two disconnecting elements (4MA, 4MB) arranged in series with the phase conductor (6) in the module housing and forming an electrical branch in the form “T at the input of the disconnect system. Module according to any one of claims 11 to 14, characterized in that the inlet disconnector (4M) opens outside the module housing (2) on the metal housing (30), which comprises at least one phase conductor (29) in the insulating gas. Module according to claim 12, characterized in that a third interrupter (3C) is arranged in series with the first and second interrupters (3A, 3B) between two input disconnect (4M). Module according to claim 16, characterized in that the disconnectors (4S) in series with the phase conductor (6) make it possible to electrically isolate each of the interrupters (3A, 3B, 3C) from its neighbors. Module according to any one of claims 8 to 17, characterized in that the at least one breaker or disconnector is arranged in a separate compartment in the module housing (2), said compartment being sealed from adjacent compartments. Module according to any one of claims 8 to 18, comprising at least one current transformer (19) disposed between 1fi RRQfifla terminal breaker (4A, 4B) and overground bushing (5A, 5B) or between the input breaker and the breaker. A high voltage multiphase substation called a "hybrid type" one breaker and a half, comprising two air insulated bus sets (10) as well as two line connecting lines (L1, L2) of which at least one is air insulated, and comprising two encapsulated break and switch modules (1, 7B) each comprising a metal sheath (2, 8) comprising, for each electrical phase passing through the module, break and disconnect systems connected to a phase conductor (6) in the insulating gas, both ends (13) 14) an end disconnecting system (4A, 4B) is provided in the module, characterized in that at least one bus set (10) can supply both line input lines (L1, L2) via a single interrupt and switch module (1) according to any one of claims 9, 10, 16 and 17. 21. A high voltage multiphase substation called a &quot; H-shaped hybrid &quot; comprising two pairs of opposed air-insulated connecting lines (A, B, C, D) each connected to a power line (L1, L2), characterized by in that the opposite connecting lines (A and B, C and D) of each line are electrically connected by a single module (1) according to claim 8, and in that the overhead bushings (5M) connected to the input disconnector (4M) of the module (1) be phase-to-phase electrically coupled to corresponding overhead bushings located on adjacent modules.